CN109211562A - It is a kind of for detecting the method and device of lead storage battery safety valve ageing properties - Google Patents
It is a kind of for detecting the method and device of lead storage battery safety valve ageing properties Download PDFInfo
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- CN109211562A CN109211562A CN201811183653.2A CN201811183653A CN109211562A CN 109211562 A CN109211562 A CN 109211562A CN 201811183653 A CN201811183653 A CN 201811183653A CN 109211562 A CN109211562 A CN 109211562A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a kind of for detecting the method and device of lead storage battery safety valve ageing properties.Safety valve by being tested the open and close valve pressure change of safety valve by the method for the present invention in the state that a kind of simulated battery is recycled, and safety valve aging conditions are judged using open and close valve pressure change ratio, as a result more true and reliable, the practical aging conditions of safety valve can be accurately reflected, provide more effective means of testing for sorting, the lot inspection of safety valve.Apparatus of the present invention are developed suitable for the method for the present invention, engineered rear for detecting using existing battery case, are matched with safety valve, are more nearly safety valve use state, the result detected is more true and reliable.
Description
Technical field
The present invention relates to lead storage battery detection technique fields, old for detecting lead storage battery safety valve more particularly to one kind
Change the method and device of performance.
Background technique
Lead storage battery has the history in more than 150 years, and wide range of applications so far.In recent years, electric vehicle with its compared with
Good performance of riding instead of walk, lower storage space requirement and outstanding price advantage is grown rapidly in China, has benefited from this, battery
Industry is also rapidly developed.
Lead storage battery belongs to reversible dc power supply, chemical energy can be changed into electric energy, while can also converting electrical energy into
Learn energy.Lead storage battery is mainly made of electrolyte, slot cover and pole group, and the electrolyte of lead storage battery is sulfuric acid solution, wherein pole
Group is mainly made of positive plate, negative plate and partition, and partition primarily serves storage electrolyte, and the gas compound as oxygen is logical
Road, play prevent active material fall off and positive and negative electrode between short-circuit effect.
Safety valve is one of critical component of valve-control type lead-acid accumulator, once safety valve occur it is abnormal if whole battery can be because
This and failure cause failure, its effect first is that control cell negative terminal internal pressure, reaches its valve opening value when air pressure inside is excessively high
When can release stress, when be lower than its valve closing value when can valve closing keep certain internal pressure, can not only prevent battery bulging, but also
Internal pressure can be kept to promote oxygen compound.Safety valve material is ethylene propylene diene rubber, has good anti-aging property, but competing in market
Strive down, do not stint performance remove to reduce material utilization amount or using cheap General Purpose Rubber production safety valve so that the performance of safety valve
It is greatly lowered, influences battery life.The pressure detecting of safety valve has many methods, such as Publication No. CN102721534A
Chinese invention patent discloses a kind of accumulator protection valve detection method and its device, which includes: regulating gas
Flowmeter throughput and gas source adjust module output pressure value, and computer and test software operation automatically control I/O module, simultaneously
Exhaust valve, intake valve are opened into emptying residual gas pressure；Safety valve to be detected is mounted on relief valve connection again, passes through computer
It is automatically brought into operation and completes one-time detection movement, repeat detection operation, compare circulating exhaust process and record detection record product label.
The device include computer and test software, signal wire, A/D module, exhaust valve, gas flowmeter, pressure transmitter module,
Four-way interface, shell, relief valve connection, intake valve, gas source adjust module, tracheae, power supply line, power module, I/O module.
Service life for safety valve is also the problem of industry is more paid close attention to, and test can be boiled using acid and carries out aging survey
Examination also has the degradation carried out under negative pressure state, as the Chinese invention patent of Publication No. CN105355994A discloses one
The kind safety valve degradation detecting method and detecting tool of lead-acid accumulator, the detection method is at random from the safety of a batch
Six are extracted in valve as detection exemplar；Each detection exemplar is installed on the valve seat of detecting tool, is measured and recorded down one by one
Cracking pressure and valve closing pressure before its aging；It will test exemplar to remove from valve seat, smear sulfuric acid in each detection exemplar inner wall
Then solution reinstalls to each detection exemplar on valve seat；Each single lattice of detecting tool is evacuated to -15kPa；It will test work
Room temperature is cooled to after placing five days at a temperature of 60 DEG C；It is opened for the first time after measuring and recording lower each detection exemplar aging one by one
Valve pressure and cracking pressure and valve closing pressure；It determines according to testing result.But for the lead-acid power accumulator being recycled
Safety valve be with it is each using circulation go frequent valve opening and valve closing, can not actual response using above-mentioned aging testing method
The operating condition of safety valve causes erroneous judgement to influence battery life, or even causes using accident.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of for detecting lead storage battery safety valve aging
The method and device of energy, may be implemented as a result more really may be used to the assessment of safety valve ageing properties under battery actual condition
It leans on, provides more effective means of testing for sorting, the lot inspection of safety valve.
A method of for detecting lead storage battery safety valve ageing properties, comprising the following steps:
(1) the initial cracking pressure and valve closing pressure of safety valve sample, respectively K are detected0And B0；
(2) safety valve sample is mounted on inside to fill on the valve seat of empty battery case slot cover of electrolyte, makes sky battery case
Positive pressure and negative pressure are inside successively kept, a positive pressure and a negative pressure are a circulation, detect safety valve again after several circulations
The cracking pressure Kn and valve closing pressure Bn of sample；
(3) change rate of cracking pressure and valve closing pressure is calculated separately, wherein the change rate η of cracking pressurek=| K0-Kn|/
K0, valve closing pressure change rate ηB=| B0-Bn|/B0；
(4) work as ηkWith ηBWhen any value is greater than 15%, test is terminated, and no person repeats step (2) and (3)；
(5) ageing properties of safety valve sample are judged according to the number for repeating step (2) and (3).
Preferably, each positive pressure and negative pressure maintain 2~5min respectively in step (2).
Preferably, cycle-index is 80~100 times in step (2).
Positive pressure and negative-pressure cyclic are carried out at a temperature of empty battery case is placed in 45 DEG C~55 DEG C in step (2).
Positive pressure pressure value is 20~45kPa in step (2), and negative pressure pressure value is -10~-20kPa.
It is a kind of for detecting the device of lead storage battery safety valve ageing properties, comprising:
Battery case, groove body and lid including mutually covering conjunction, lid have the valve seat for installing safety valve；
Compressed air source makes battery case keep positive pressure for inflating into battery case；
Vacuum pump makes battery case keep negative pressure for being evacuated to battery case；
Gas tube is separately connected compressed gas source and battery case；
Exhaust tube is separately connected vacuum pump and battery case.
Apparatus of the present invention when in use, fill dilution heat of sulfuric acid of the specific gravity 1.35~1.40, in battery case more can
The actual use environment of safety valve is embodied, guarantees that result is more accurate.
The device further includes the insulating box for placing battery slot.When detection, calorstat temperature setting 45 DEG C~
55 DEG C, battery can generate heat in use, and slightly raising temperature can more accurately reflect the actual conditions of safety valve, and
And can also accelerate the aging of safety valve, shorten entire detection cycle.
The gas tube is equipped with first pressure regulating valve；The exhaust tube is equipped with second pressure regulating valve.Pressure-regulating valve
For adjusting pressure size used in positive pressure and negative pressure according to actual needs.
The gas tube is equipped with first switch valve；The exhaust tube is equipped with second switch valve.The setting of switch valve, Ke Yi
The switching between positive pressure and negative pressure step is ensured by the opening and closing of switch valve in detection process.
The device further includes control system, and the control system controls first switch valve and second switch valve respectively
Opening and closing.The setting of control system can enable entire detection process automate progress, detect more convenient.
Safety valve by being tested the opening and closing of safety valve by the method for the present invention in the state that a kind of simulated battery is recycled
Valve pressure change, and safety valve aging conditions are judged using open and close valve pressure change ratio, it is as a result more true and reliable, it can
The practical aging conditions of safety valve are accurately reflected, provide more effective means of testing for sorting, the lot inspection of safety valve.
Apparatus of the present invention are developed suitable for the method for the present invention, engineered rear for detecting using existing battery case,
It is matched with safety valve, is more nearly safety valve use state, the result detected is more true and reliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of for detecting the device of lead storage battery safety valve ageing properties, comprising: battery case, compression are empty
Gas source 4, vacuum pump 5, gas tube 6 and exhaust tube 7.
Compressed air source 4 makes battery case keep positive pressure, general compressed air source 4 can make for inflating into battery case
With the steel cylinder that compressed air is housed；Vacuum pump 5 is used to be evacuated battery case, and battery case is made to keep negative pressure.Compressed air source 4 and true
5 switching of sky pump uses, and makes interval holding positive pressure and negative pressure in battery case, imitated storage battery in actual use, charging and
The state of electric discharge.6 both ends of gas tube are separately connected compressed gas source 4 and battery case；7 both ends of exhaust tube are separately connected 5 He of vacuum pump
Battery case.
Battery case includes the groove body 1 and lid 2 that mutual lid closes, and lid 2 has the valve seat 3 for installing safety valve 14, slot
The inner cavity of body 1 is divided into several single lattices by demarcation plate 13, in use, needing to get through demarcation plate 13, so as to each single lattice of battery case
Between be interconnected, be convenient for gas free flow between single lattice.
Two of them valve seat 3 for installing gas tube 6 and exhaust tube 7 respectively, when installation, needs to guarantee sealed set, can
To use sealant entirely to seal valve seat 3.Remaining valve seat 3, can be with one-time detection for installing safety valve 14 to be detected
It is multiple, only stay one to detect after remaining valve seat 3 can also being sealed.
Apparatus of the present invention further include the insulating box 8 for placing battery slot.When detection, 8 temperature setting of insulating box is at 45 DEG C
~55 DEG C, battery can generate heat in use, and slightly raising temperature can more accurately reflect the actual conditions of safety valve,
And the aging that can also accelerate safety valve shortens entire detection cycle.
Gas tube 6 is equipped with first pressure regulating valve 9；Exhaust tube 7 is equipped with second pressure regulating valve 10.Pressure-regulating valve is used for
Pressure size used in positive pressure and negative pressure is adjusted according to actual needs.Gas tube 6 is equipped with first switch valve 11；Exhaust tube 7 is set
There is second switch valve 12.The setting of switch valve can ensure positive pressure and negative pressure by the opening and closing of switch valve in the detection process
Switching between step.
Apparatus of the present invention further include control system, and control system controls first switch valve 11 and second switch valve 12 respectively
Opening and closing.The setting of control system can enable entire detection process automate progress, detect more convenient.
Apparatus of the present invention when in use, fill dilution heat of sulfuric acid of the specific gravity 1.35~1.40, in battery case more can
The actual use environment of safety valve is embodied, guarantees that result is more accurate.
Embodiment 2
It is detected using device in embodiment 1.It is 45 DEG C that temperature, which is arranged, in insulating box.
Detection method includes the following steps:
(1) the initial cracking pressure and valve closing pressure of safety valve sample, respectively K are detected0And B0；
(2) safety valve sample is mounted on inside to fill on the valve seat of empty battery case slot cover of electrolyte, makes sky battery case
Inside successively positive pressure and negative pressure, positive pressure pressure value is kept to be set as 20kPa, negative pressure pressure value is set as -10kP, a positive pressure and one
Secondary negative pressure is a circulation, and each positive pressure and negative pressure maintain 5min respectively, detects safety valve sample again after 80 circulations
Cracking pressure Kn and valve closing pressure Bn；
(3) change rate of cracking pressure and valve closing pressure is calculated separately, wherein the change rate η of cracking pressurek=| K0-Kn|/
K0, valve closing pressure change rate ηB=| B0-Bn|/B0；
(4) work as ηkWith ηBWhen any value is greater than 15%, test is terminated, and no person repeats step (2) and (3)；
(5) ageing properties of safety valve sample are judged according to the number for repeating step (2) and (3).
Table 1
The results are shown in Table 1, each three samples of three kinds of unlike materials is detected altogether, it can be seen from the test result of table 1
The initial open and close valve pressure value of three classes sample is substantially comparable, but after degradation, I class sample be obviously better than II class,
Group III illustrates that I class safety valve anti-aging property is optimal.
Embodiment 3
It is detected using device in embodiment 1.It is 55 DEG C that temperature, which is arranged, in insulating box.
Detection method includes the following steps:
(1) the initial cracking pressure and valve closing pressure of safety valve sample, respectively K are detected0And B0；
(2) safety valve sample is mounted on inside to fill on the valve seat of empty battery case slot cover of electrolyte, makes sky battery case
Inside successively positive pressure and negative pressure, positive pressure pressure value is kept to be set as 45kPa, negative pressure pressure value is set as -20kP, a positive pressure and one
Secondary negative pressure is a circulation, and each positive pressure and negative pressure maintain 2min respectively, detects safety valve sample again after 100 circulations
Cracking pressure Kn and valve closing pressure Bn；
(3) change rate of cracking pressure and valve closing pressure is calculated separately, wherein the change rate η of cracking pressurek=| K0-Kn|/
K0, valve closing pressure change rate ηB=| B0-Bn|/B0；
(4) work as ηkWith ηBWhen any value is greater than 15%, test is terminated, and no person repeats step (2) and (3)；
(5) ageing properties of safety valve sample are judged according to the number for repeating step (2) and (3).
Table 2
Each three samples of three kinds of unlike materials are detected altogether, and three classes sample is initial it can be seen from the test result of table 2
Open and close valve pressure value is substantially comparable, but after degradation, and VI class sample is obviously better than IV class, V class, illustrates that VI class is pacified
Full valve anti-aging property is optimal.
Claims (10)
1. a kind of method for detecting lead storage battery safety valve ageing properties, which comprises the following steps:
(1) the initial cracking pressure and valve closing pressure of safety valve sample, respectively K are detected0And B0；
(2) by safety valve sample be mounted on it is internal fill on the valve seat of empty battery case slot cover of electrolyte, make in sky battery case according to
Secondary holding positive pressure and negative pressure, a positive pressure and a negative pressure are a circulation, detect safety valve sample again after several circulations
Cracking pressure Kn and valve closing pressure Bn；
(3) change rate of cracking pressure and valve closing pressure is calculated separately, wherein the change rate η of cracking pressurek=| K0-Kn|/K0, close
The change rate η of valve pressureB=| B0-Bn|/B0；
(4) work as ηkWith ηBWhen any value is greater than 15%, test is terminated, and no person repeats step (2) and (3)；
(5) ageing properties of safety valve sample are judged according to the number for repeating step (2) and (3).
2. the method as described in claim 1, which is characterized in that in step (2) each positive pressure and negative pressure maintain 2 respectively~
5min。
3. the method as described in claim 1, which is characterized in that cycle-index is 80~100 times in step (2).
4. the method as described in claim 1, which is characterized in that empty battery case is placed in 45 DEG C~55 DEG C temperature in step (2)
Lower progress positive pressure and negative-pressure cyclic.
5. the method as described in claim 1, which is characterized in that positive pressure pressure value is 20~45kPa, negative pressure pressure in step (2)
Force value is -10~-20kPa.
6. a kind of for detecting the device of lead storage battery safety valve ageing properties characterized by comprising
Battery case, groove body and lid including mutually covering conjunction, lid have the valve seat for installing safety valve；
Compressed air source makes battery case keep positive pressure for inflating into battery case；
Vacuum pump makes battery case keep negative pressure for being evacuated to battery case；
Gas tube is separately connected compressed gas source and battery case；
Exhaust tube is separately connected vacuum pump and battery case.
7. device as claimed in claim 6, which is characterized in that further include the insulating box for placing battery slot.
8. device as claimed in claim 6, which is characterized in that the gas tube is equipped with first pressure regulating valve；The pumping
Pipe is equipped with second pressure regulating valve.
9. device as claimed in claim 6, which is characterized in that the gas tube is equipped with first switch valve；The exhaust tube is set
There is second switch valve.
10. device as claimed in claim 9, which is characterized in that further include control system, the control system controls respectively
The opening and closing of one switch valve and second switch valve.
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| CN201811183653.2A CN109211562B (en) | 2018-10-11 | 2018-10-11 | Method and device for detecting aging performance of lead storage battery safety valve |
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| CN201811183653.2A CN109211562B (en) | 2018-10-11 | 2018-10-11 | Method and device for detecting aging performance of lead storage battery safety valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057571A (en) * | 2019-04-12 | 2019-07-26 | 超威电源有限公司 | A kind of detection device and method of electric boosted automobile-used Capsule formula safety valve |
| CN112924166A (en) * | 2021-03-17 | 2021-06-08 | 潍柴动力股份有限公司 | Overflow valve fault detection method and device, electronic equipment and storage medium |
| CN113054271A (en) * | 2019-12-27 | 2021-06-29 | 北京车和家信息技术有限公司 | Method and device for detecting safety state of battery |
| CN113532842A (en) * | 2021-06-28 | 2021-10-22 | 合肥国轩高科动力能源有限公司 | Method for testing pressure-resistant service life of explosion-proof valve for lithium battery |
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| CN113054271A (en) * | 2019-12-27 | 2021-06-29 | 北京车和家信息技术有限公司 | Method and device for detecting safety state of battery |
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| CN113532842A (en) * | 2021-06-28 | 2021-10-22 | 合肥国轩高科动力能源有限公司 | Method for testing pressure-resistant service life of explosion-proof valve for lithium battery |
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